Re: selling point
Well, if it has hardware acceleration all round (as the competition with both Raspbian and the unnamed media players would suggest), then it's perhaps worthy of consideration. Right now I do some browsing and desktop work on raspbian but I have to switch SD cards to watch movies (which means waiting a full 15 seconds for the Pi to reboot, insufferable ain't it?).
No seriously, hardware accel. for the desktop would be nice. Having that nice GPU sitting iddly while the CPU struggles at full steam is a shame.